Pipe-cutter.



l. W. NONNEMAN.

. PIPE cums. APPLICATION FILED FEB. 10. I914.

Patented Aug. 17, 1915.

2 SHEETS-SHEET 1.

COLUMBIA PLANDCIRAPH COHWASNDJGTON, D. c.

l. W. NONNEMAN.

PIPE CUTTER. APPLICATION FILED FEB. 10. 1914.

Patented Aug. 17, 1915.

2 SHEETS-SHEET 2.

COLUMBIA FLANOGRAPH co,wAsHlNflTON. D. c.

relatively large ment, together with a IRA w. NONNEMAN, or WARREN, orno, ASSIGNORTO THE 7 WARREN, OHIO, A CORPORATION or OHIO.

EIQIE.

BURDEN COMPANY, OF

PIPE-CUTTER.

To all whom it may concern: i

Be it known that I,'IRA W. N NNRMAN, of Varren, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements in Pipe-Cutters; and I do hereby declare the followingto be a full, clear, and exact" description of the invention, such as will enableothers skilled in the art to which it appertains to make and use the same."

The object of this invention'is to provide a strong and simple pipe-cutter for pipes of diameter; one which may be easily applied to a pipe between its ends, and one which without danger of the knives.

In the accompanying drawing, Figure 1 is a front elevation with parts in dotted lines. Fig. Zis aside view; fFig. 3 isa sectional view on line. 3-3 Fig. 1. Fig. 4 is a sectional view through a portion ofthe chuck and cutter-carrier.

of burning off the corners ing the chuck jaws. Fig. 6 is a view of the chuck-ring and a portion of handle. .Fig. 7 is a view of a portionof the cutter carrier and its removable segportion of the operating lever. A

The ent No. 1,040,20201? October 1, 1912, while most effective for cutting pipe of relatively small diameters,'is open to the'objection, in cutting pipe of relatively large diameters, say four inchesand over, that the corners of the knives will burn the tool causes the cutters to travel at a rapid rate. By my'present invention the advantage of the automatic feed of the cutters is retained, but the cutters are caused to rotate at furthermore Referring to the drawings, 1 designates a chuck which is shown'in theform of a segmental ring and as having two diametrically-opposedpipe-engaging jaws 2 which are capable of being moved in opposite directions by turning a double-threaded screw 3. The omitted segment leaves an opening in the chuck-ring to permit the latter to be of different di ameters within the range of the tool. To

1 Specification of Letters latent.

maybe easily manipulated e Fig. 5 is a fragk mentary view showing'the means for adjust the operating 14 to the pawl-carrier.

pipe-cuttershown in the Howe Patofl'. This is owing to the fact that the direct pull exerted on a relatively slowspeed, and the tool may be applied to a.

pipe atany point, the cutter-carrier is gradually Patented Aug. 1?, 1915. 5 Applicationfiled February 10, 1914. Serial mamas.

the front face of thisring is secured a segif the form of a ring revolubly mounted on the chuck andextending beyond one side thereof. The cutter-ring on its inner face has a continuous groove for taking in gib t-by which it is retained in position on the ClllICk-A segment 6 of the cutter ring is removable, but is normally held in place by bolts which are passed through the deflected flanged ends 8 of the segment, which ends overlap theouter face of ring 5 suiiici'ently toinsure a firm bearing for the segment Whenin place. The segment 6 corresponds in length to'the interruption in the chuck- The' periphery. of the-cutter-ring provided with ratchet teeth 9, being formed also on the segment 6. These teeth are engaged by a spring-pressed pawl 10 whose carrier '12, slidably mounted on the cutter-ring, is giventhe necessary back andfo'rth movement by the reciprocation of a manipulating lever '13 which is fulcrumed onflthe chuck-ring and is connected by a link The point of fulcrum of lever 13 is to one side of a vertical plane passing centrally through the axis of the cutter-carrying ring, andis preferably somewhat nearer the horizontal plane pass ing centrally through such axis than it is i to the vertical plane. The link 14 is eX- tended at substantiallyright angles from the lever to which it is connected at a point near the fulcrum, making an angle more acute than that of a tangent to a radius of the cutter-carrying ring, thereby insuring easy action and requiring less space for the manipulation of the lever. As the pawl-carrier is moved in one direction the cutter-ring is caused to move therewith, but when moved in the opposite direction the pawl slides over the ratchet teeth.

rotated.

In suitable housings l5 on the projecting portion of the cutter-ring are mounted spring-pressed. knivesor cutters 16, which are preferably constructed and arranged, after the manner oftheHowe patent before noted. By turning a double threaded screw 17 mounted in bearings the housing of the two cutters will move in unison, and when forced into engagement with a pipe the respective springs of the In this way ssj on the cutter-carrier,

" 17 the two cutters cutterswvill be placed under suflicient ten sion to insure their being kept to their work as the cutting operation progresses,J

To apply thedevice to a pipe at a. point other than over the end thereof, the operator turns the cutter-carrylng ring by manipulating the lever, until about the center of the removable segment 6 is in engage- ,ment with the pawl, at'which time such segment is in line with the omitted portion of the chuck rmg, and thereupon by with drawing. bolts 7, the segment 6 may be swung clear of I the passageway provided for a pipe, such segment, the pawl carrier and the .way by the link lt being moved out. of operator turning lever aits fulcrum. Thereupon screw Sxis turned to bllld the clamps 2 against the pipe, segment 6 is restored to, its pro-per:positionwhere it,

is held by'bolts "I. Then by turning screw gagement with the pipe, and their respective springs compressed. The cutter-carrier is gradually'revolved around the pipe and the chuck by the back and iorthmove' merits of the manipulating leverm a j The advantagesof my invention willbe readily appreciated by those skllled ln the art. It willbe seen that by means;- thereof pipe-cutter having automatically controlled knives may beemployed for, cutting pipes of relatively large diameters without danger of burning on? the corners of the knives; that the tool may be readily apphed to a pipe either over its endor by positioning 1t thereon atfanyintermediate point,

" moved are, carried by the ver, thus lessening the danger K I claimas my 1nvention:

and that when the parts are removed from their normalpositioi'is with theisi'ngle eX.- ception of'thc bolts by which the. cutterring segment is held", the parts. so remanipulating 1eof their being lost. or misplaced. By means ofthel'ever ally rotated without danger ofunduly injuring the cutters. F

chuck, a toothed ring rotatably mounted on said chuck and having a removable segment, cutters m'ounted on said toothed ring, and means mounted on the chick and designed 1. A pipe-cutter comprising a to engage the toothed portion of said ring ,fo1' rotating the same, sald means being con structed and arranged to support said" segment when disconnected from. said ring.

'2. A pipe cutter comprising a chuck, a toothed ring rotatably mounted on said chuck and havinga removable segment, cutters mounted: on said: toothed ring a lever fulcrumed' on the chuck toone side of a vertical planepassing centrally through the axis of the cutter-carrying ring, a pawl, a carrier therefor shdably mounted, on sald will be brought intoen fulcrumedi on the chuck and connected to the pawl the cutter-carrier may be graduring, and a link-connecting said pawl-car rier to said lever, said link being connected tothe lever at a point :near its fulcrum.

3; A pipe-cutter comprising a chuck, a

cutter carrien rotatably mounted on said chuck, said cutter-carrier being provided with teeth on its periphery and having are;

movable segment, pipe-cutters' lmounted 0n the cutter-carrier, apawl for engaging the teeth on saidbutter-carrier, a carrier ,for said pawlshdablef on sa d cutter-carrier, and a lever for actuat ng said pawl-carrier,

said pawl-carrier being designed tofsupport said removable segmentiwhen' the latter is 1 r jsc 4. A pipe-cutter comprising a chuck hay-i f detached.

ing a ringwith segment thereof fornitted and clamps. carr ed'by sa d ringier, engagng a pipe, a toothed-r1ng rotatably mountt ed on said chuck and havlng'aremovable segment provided with deflected; flanges at] its ends, removable bolts for fastening said fiangesto said toothed ring," cutters mount ed'bn. the. latter, and means "for operating p 7 said toothed-ring comprising a reciprocating member and a lever fulcrumed onsaid chuck and to which said member is pivotally connected. 1 1 7 5; A pipe-cutter comprisingachuck-ring formed with an opening andclam-pscarried by said forengagin-g a. pipe, acuttercarrying ring rotatably mounted on saidv chuck-ring andhavinga removable segment sprlng-pressed' cutters mountedon said cutter-carrying ring, ascrew for operating-both cutters simultaneously;the springs of said cutters being placed under tension by the engagement of the cutters with a pipe, a reciprocating lever mounted on said chuckring, and means actuated by said lever 'for' rotating said cutter-carryingring.

6." pipe-cutter comprising a, chuck-ring designed to be securedto a, pipe, a, cuttercarrying ring rotatably mounted .on the chuck-ring and extending beyond one side thereof, spring-pressed cutters, housings for said cutters slidably mountedon said cut- 'ter-c'arrylng ring, means for simultaneously adjusting bothicutter housings, and means mounted on the chuck-ring for gradually rotating saidcutter-carrying ring.

7 A pipe-cutter comprising a chuck-ring having a segment. thereof omitted and clamps carried by said ringfor engaging a pipe, means for simultaneously adjusting the relative, positions of said clamps, acutter-carrying ring {mounted on said chuckring and, extending beyond one side thereof, self-feeding cutters mounted on said cuttercarrying ring, means for simultaneouslyadjusting the relative positions of said cutters, andimeans mounted on the chuck-ring andengaging'the cutter carrying ring for effectingthe rotation thereof.

.8. A pipe-cutter comprising a chuck-ring omitted segment of the having a segment thereof omitted and clamps carried by said ring'for engagin a pipe a cutter-carrying ring rotata 1y mounted on said chuck-ring and extending beyond one side thereof, said cutter-carr ing ring being provided with teeth on its periphery and having a removable segment substantially corresponding in. length to the chuckling, means for detachably securing said segment place, pipe cutters mounted on the cutter carrying rmg, a pawl for engaging the teeth on said cutter-carrying ring, a carrier for said pawl slidable on said cutter-carry ing ring, a lever fulcrumed on said chuckring, and a link pivotally connecting said pawl-carrier to said lever, said pawl-car mg witnesses. I IRA W.- N ()NNEMAN.

Witnesses: a

M. W. BECHTEL, I. B. TAYLOR.

Copies of this patent may ,be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

